Answers

Add 20/3 and 28/81

1^st number: 6 2/3, 2^nd number: 28/81

20/3 + 28/81 is 568/81.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 3 and 81 is 81
   
   Next, find the equivalent fraction of both fractional numbers with denominator 81
2. For the 1st fraction, since 3 × 27 = 81,
   20/3 = 20 × 27/3 × 27 = 540/81
3. Likewise, for the 2nd fraction, since 81 × 1 = 81,
   28/81 = 28 × 1/81 × 1 = 28/81
4. Add the two like fractions:
   540/81 + 28/81 = 540 + 28/81 = 568/81
5. So, 20/3 + 28/81 = 568/81
   In mixed form: 71/81

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